Could also be that the juice isn't getting to the front axle brakes. Several posts here about wires to the brakes either not being connected or being broken. So check your wiring. Also: There is typically one wire going in (from the 7-pin connector) and one coming out. The one coming out is usually just grounded to frame. Several posts about the ground wire not being adequate connected to the frame or being broken. So you need to make sure BOTH wires are good.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10